Writes this object's PDF syntax to writer.
public void WriteTo(IBufferWriter<byte> writer)
The destination.
ISO 32000-2 §7.2 and §7.3. The output parses back, through Parse(ReadOnlySpan<Byte>), to an object that DeepEquals(CosObject?, CosObject?) this
one. A stream is written with a direct Length equal to its encoded data length.